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lorasvet [3.4K]
3 years ago
9

A searchlight rotates through one complete revolution every 4 seconds. How long does it take the light to rotate through 90 degr

ees? Help me set it up please
Mathematics
2 answers:
frez [133]3 years ago
6 0
1 full revolution=360
4seconds=360degrees
how many seconds is 90 degrees
4:360=x:90
4/360=x/90
simpllfiy
1/90=x/90
1=x

answer is 1 second
ziro4ka [17]3 years ago
3 0
The ratio of the angle that the light rotate to the time in seconds should be equal. One revolution is equal to 360 degrees. Let x be the time it would take to rotate 90 degrees,
                               360 degrees / 4 seconds = 90 degrees / x seconds
The value of x is 1. Therefore, it would take only 1 second to rotate 90 degrees. 
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HELP PLZZZSS EASYYYY 10 POINTS *easy*
zalisa [80]

Answer:

A. 3:30.

Step-by-step explanation:

180 is 90+90 so that would put it in 3:30.

4 0
3 years ago
Please Help!!!<br> Determine the range of the following graph:
ELEN [110]

Answer:

[-1, 6)

General Formulas and Concepts:

<u>Algebra I</u>

  • Reading a coordinate plane

<u>Algebra II</u>

  • Range is the set of y-values that are outputted by function f(x)
  • Interval Notation - [Brackets] denote inclusion and (Parenthesis) denote exclusion

Step-by-step explanation:

According to the graph, our y-values span from -1 to 6. Since -1 is a closed dot, it is inclusive. Since 6 is an open dot, it is exclusive:

Range would then be [-1, 6).

5 0
3 years ago
The surface areas of two similar solids are 384 yd squared and 1057 yd squared The volume of the larger solid is 1795. What is t
Arturiano [62]
This is the concept of scale factors, we are required to calculate for the volume of the smaller solid if the larger solid has a volume of 1975.
Area scale factor=(linear scale factor)^2
thus;
Area scale factor=(area of larger solid)/(area of smaller solid)=1057/384
linear scale factor=√(1057/384)=5.7019
the volume scale factor=(linear scale factor)^3=[volume of larger solid]/[volume of smaller solid]
The volume scale factor=(5.7019)^3=185.3772
therefore;
volume of smaller solid=[volume of larger solid]/[volume scale factor]

=1795/185.3772
=9.683 
The answer is 9.683 yd^3

5 0
3 years ago
What is the constant and missing variable of these problems
Studentka2010 [4]

Answer:

14

Step-by-step explanation:

7 0
3 years ago
Use the zero product property to find the solutions to the equation x^2-13x+30=0
Daniel [21]

We need to solve the zeroes of the given expression x² - 13x + 30 = 0 and we need to apply zero product property.First, we need to identify the two numbers which will result to -13 when added and it will result to 30 when multiplied. These two numbers are -3 and -10. Then, we can proceed with the solution such as:
x² - 13x + 30 = 0
(x-3) (x- 10) =0
From above, we have already the two zero product:
x-3 = 0
x1 = 3
x-10 =0
x2 =10

The answers are x1 = 3 and x2 = 10.
8 0
4 years ago
Read 2 more answers
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